1/4" X 3/32" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Part Number DWCF339

Part Number DWCF339

Part Number: BIT-SDS1212

Part Number SDS3418

Size 3-7/8"-8

Part Number: M20C50ASB12BO

1/4" X 3/32" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Part Number DWCF339Product Description Counterboring is the enlargement of a portion of a hole that has previously been formed. If the counterbored portion is shallow (1 8" or less), the operations is usually known as spot facing; for example, a flat seat for a bolt head or nut. If, on the other hand, the hole is enlarged to a considerable depth, it is designated as counterboring. These counterbores are made of two piece construction, having an integral shank and